//------------------------------------------------------------------------------------------------
// The MIT License (MIT)
// 
// Copyright (c) 2019 Crsky
// 
// Permission is hereby granted, free of charge, to any person obtaining a copy of
// this software and associated documentation files (the "Software"), to deal in
// the Software without restriction, including without limitation the rights to
// use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of
// the Software, and to permit persons to whom the Software is furnished to do so,
// subject to the following conditions:
// 
// The above copyright notice and this permission notice shall be included in all
// copies or substantial portions of the Software.
// 
// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS
// FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR
// COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER
// IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
// CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
//------------------------------------------------------------------------------------------------

#ifndef HIGH_RESOLUTION_TIMER_H
#define HIGH_RESOLUTION_TIMER_H

class HighResolutionTimer
{
public:
	HighResolutionTimer();
	HighResolutionTimer( const HighResolutionTimer& ) = delete;
	HighResolutionTimer& operator=( const HighResolutionTimer& ) = delete;
	~HighResolutionTimer();

public:
	// Start timer
	void Start();
	
	// Stop timer
	void Stop();

	// Get elapsed time in second
	double GetElapsedTimeInSec();

	// Get elapsed time in milli-second
	double GetElapsedTimeInMilliSec();

	// Get elapsed time in micro-second
	double GetElapsedTimeInMicroSec();

private:
	class Impl;
	unique_ptr<Impl> impl_;
};

#endif
